EP0003578A2 - Circuit de fluide frigorigène d'une pompe à chaleur - Google Patents

Circuit de fluide frigorigène d'une pompe à chaleur Download PDF

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Publication number
EP0003578A2
EP0003578A2 EP79100319A EP79100319A EP0003578A2 EP 0003578 A2 EP0003578 A2 EP 0003578A2 EP 79100319 A EP79100319 A EP 79100319A EP 79100319 A EP79100319 A EP 79100319A EP 0003578 A2 EP0003578 A2 EP 0003578A2
Authority
EP
European Patent Office
Prior art keywords
refrigerant circuit
expansion valve
expansion device
section
flow cross
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP79100319A
Other languages
German (de)
English (en)
Other versions
EP0003578A3 (fr
Inventor
Erich Ramming
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KKW KULMBACHER KLIMAGERAETE-WERK GmbH
Kkw Kulmbacher Klimagerate-Werk GmbH
KULMBACHER KLIMAGERAETE
Original Assignee
KKW KULMBACHER KLIMAGERAETE-WERK GmbH
Kkw Kulmbacher Klimagerate-Werk GmbH
KULMBACHER KLIMAGERAETE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KKW KULMBACHER KLIMAGERAETE-WERK GmbH, Kkw Kulmbacher Klimagerate-Werk GmbH, KULMBACHER KLIMAGERAETE filed Critical KKW KULMBACHER KLIMAGERAETE-WERK GmbH
Publication of EP0003578A2 publication Critical patent/EP0003578A2/fr
Publication of EP0003578A3 publication Critical patent/EP0003578A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/385—Dispositions with two or more expansion means arranged in parallel on a refrigerant line leading to the same evaporator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—Component parts or details not otherwise provided for in this subclass
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0411—Refrigeration circuit bypassing means for expansion valves or capillary tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/37—Capillary tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits
    • F25B6/04—Compression machines, plants or systems, with several condenser circuits arranged in series

Definitions

  • the invention relates to the refrigerant circuit of a heat pump according to the preamble of claim 1.
  • a refrigerant circuit of the type mentioned in the preamble of claim 1 is already known. Because of its relatively large maximum flow cross section, the expansion valve follows the thermostatically given control commands only with a delay. The consequence of this are high control fluctuations, which are also called "hunting". The control fluctuations are greater the higher the pressures against which the expansion valve has to work.
  • the object of the invention is to provide a refrigerant circuit of the type mentioned in the preamble of claim 1, in which the high control fluctuations are avoided in a simple manner.
  • the object is achieved by the training specified in the characterizing part of claim 1.
  • the maximum effective flow cross section of the expansion valve can be kept smaller than before, the pressures occurring in the valve are easier to control. Apart from the fact that a valve with a smaller cross-section is less expensive, the service life of the valve also increases because it is less subject to wear than a valve which has to work against higher pressures.
  • FIG. 1 An embodiment of the invention is shown in the drawing, which shows a diagram of a refrigerant circuit.
  • 1 denotes a refrigerant circuit of a heat pump.
  • the refrigerant circuit 1 could also be the circuit of a refrigeration machine, since the following design would in principle also be applicable there. As a rule, however, this is not necessary in the case of refrigeration machines, since the thermal fluctuations in these are generally less.
  • a compressor 2, a condenser 3 and an evaporator 4 are located in the refrigerant circuit.
  • a thermostatically controllable expansion valve 5 is arranged between the condenser 3 and the evaporator 4.
  • the expansion valve 5 is controlled by a sensor 6, which is arranged at the outlet of the evaporator 4.
  • the sensor 6 can also be arranged at any other point on the suction line of the refrigerant circuit 1, if this is desired.
  • the sensor 6 can also be acted upon by a temperature other than the temperature of the refrigerant circuit 1.
  • a further expansion device 7 is arranged parallel to the expansion valve 5.
  • the maximum effective flow cross section of the expansion valve 5 is reduced in favor of the effective flow cross section of the further expansion device 7.
  • the entire cross section required for the expansion of the refrigerant is therefore divided into two cross sections.
  • the flow cross-sections provided for the expansion of the refrigerant can both be thermally controlled.
  • two thermally controlled expansion valves are arranged side by side in parallel.
  • a thermally controlled expansion valve and a non-thermally controlled throttle element can also be arranged side by side (not shown).
  • a throttle capillary tube as a further expansion device 7 parallel to the expansion valve 5, as shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
EP79100319A 1978-02-15 1979-02-02 Circuit de fluide frigorigène d'une pompe à chaleur Withdrawn EP0003578A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2806381 1978-02-15
DE19782806381 DE2806381A1 (de) 1978-02-15 1978-02-15 Kaeltemittelkreislauf einer waermepumpe

Publications (2)

Publication Number Publication Date
EP0003578A2 true EP0003578A2 (fr) 1979-08-22
EP0003578A3 EP0003578A3 (fr) 1979-09-05

Family

ID=6032046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79100319A Withdrawn EP0003578A3 (fr) 1978-02-15 1979-02-02 Circuit de fluide frigorigène d'une pompe à chaleur

Country Status (3)

Country Link
EP (1) EP0003578A3 (fr)
DE (1) DE2806381A1 (fr)
IE (1) IE790287L (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077414A1 (fr) * 1981-10-20 1983-04-27 Mitsubishi Denki Kabushiki Kaisha Système de conditionnement d'air
FR2626066A1 (fr) * 1988-01-18 1989-07-21 Roland Facchinetti Generateur de chaleur thermodynamique
CN106440439A (zh) * 2016-12-05 2017-02-22 天津商业大学 热力膨胀阀和手动膨胀阀交替使用的单库房冷库制冷系统
EP4145065A3 (fr) * 2021-09-02 2023-05-03 Therma-Stor LLC Expansion à flux parallèle pour le contrôle de la pression et de la surchauffe

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020206823A1 (de) 2020-06-02 2021-12-02 BSH Hausgeräte GmbH Haushaltsgerät, insbesondere wäschetrockner, mit einer wärmepumpe umfassend eine expansionseinrichtung

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE637239A (fr) *
US2675683A (en) * 1954-04-20 Control means fob refrigeration
US1782688A (en) * 1927-08-01 1930-11-25 Baker Ice Machine Co Inc Refrigerating system
US1782689A (en) * 1928-04-16 1930-11-25 Baker Ice Machine Co Inc Refrigerating apparatus
US2684578A (en) * 1951-06-04 1954-07-27 Hieatt Engineering Co Apparatus for low-temperature refrigeration
US2709340A (en) * 1953-10-13 1955-05-31 Robert C Webber Refrigerating system with low temperature stabilization
US2769312A (en) * 1953-12-04 1956-11-06 Gen Motors Corp Refrigerant expansion control
US3150502A (en) * 1962-07-25 1964-09-29 Singer Co No-freeze refrigerant control
US3264837A (en) * 1965-04-09 1966-08-09 Westinghouse Electric Corp Refrigeration system with accumulator means
US3293874A (en) * 1965-09-29 1966-12-27 Carrier Corp Air conditioning system with reheating means
US3388558A (en) * 1966-07-28 1968-06-18 Westinghouse Electric Corp Refrigeration systems employing subcooling control means
DE2029403A1 (en) * 1969-08-28 1971-08-12 VEB Kombinat Medizin und Labortech nik, χ 7035 Leipzig Continuously running refrigeration plant thermostat
DE2151714A1 (de) * 1971-10-18 1973-04-26 Sollich Ohg Verfahren zur temperierung von schokoladenmassen und vorrichtung zur durchfuehrung des verfahrens
DE2457182C2 (de) * 1974-12-03 1983-09-15 Stierlen-Maquet Ag, 7550 Rastatt Wärmerückgewinnungseinrichtung für eine Geschirrspülmaschine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077414A1 (fr) * 1981-10-20 1983-04-27 Mitsubishi Denki Kabushiki Kaisha Système de conditionnement d'air
FR2626066A1 (fr) * 1988-01-18 1989-07-21 Roland Facchinetti Generateur de chaleur thermodynamique
CN106440439A (zh) * 2016-12-05 2017-02-22 天津商业大学 热力膨胀阀和手动膨胀阀交替使用的单库房冷库制冷系统
EP4145065A3 (fr) * 2021-09-02 2023-05-03 Therma-Stor LLC Expansion à flux parallèle pour le contrôle de la pression et de la surchauffe
US11874035B2 (en) 2021-09-02 2024-01-16 Therma-Stor LLC Parallel flow expansion for pressure and superheat control
US12196465B2 (en) 2021-09-02 2025-01-14 Therma-Stor LLC Parallel flow expansion for pressure and superheat control
IL295997B1 (en) * 2021-09-02 2025-11-01 Therma Stor Llc Parallel flow expansion for pressure and superheat control
IL295997B2 (en) * 2021-09-02 2026-03-01 Therma Stor Llc Parallel flow expansion for pressure and superheat control

Also Published As

Publication number Publication date
DE2806381A1 (de) 1979-08-16
EP0003578A3 (fr) 1979-09-05
IE790287L (en) 1979-08-15

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Inventor name: RAMMING, ERICH